RECYCLABLE CHIRAL CATALYST FOR ASYMMETRIC NITROALDOL REACTION AND PROCESS FOR THE PREPARATION THEREOF
申请人:Council of Scientific & Industrial Research
公开号:EP2950927A1
公开(公告)日:2015-12-09
RECYCLABLE CHIRAL CATALYST FOR ASYMMETRIC NITROALDOL REACTION AND PROCESS FOR THE PREPARATION THEREOF
申请人:COUNCIL OF SCIENTIFIC 7 INDUSTRIAL RESEARCH
公开号:US20150368181A1
公开(公告)日:2015-12-24
The present invention relates to preparation of highly efficient chiral recyclable homogeneous catalysts generated in situ by the reaction of chiral oligomeric [H
4
] ligands and a metal salt taken in 1:1 molar ratio for asymmetric nitroaldol reaction, wherein nitroaldol reactions of various aldehydes such as aromatic, aliphatic α,β-unsaturated aldehydes, alicyclic aldehydes and nitroalkenes were carried out to produce optically active β-nitroalcohols in high yield and with moderate to excellent enantioselectivity (ee up to >95%) in presence of a base and an optically active chiral recyclable homogeneous catalyst represented by the following formula (I).